Azevedo, S. S. de; Fernandes, A. R. F.; Queiroga, I. M. B. N.; Alves, C. J.; Morais, Z. M. de; Santos, C. de S. A. B.; Vasconcellos, S. A. Occurrence and Risk Factors Associated With Leptospirosis in Dogs Attended in a Veterinary Hospital in the Semiarid of the ParaĆ­ba State, Northeast Region of Brazil. Braz. J. Vet. Res. Anim. Sci. 2011, 48, 161-166.